Circular RNAs (circRNAs) are related to rheumatoid arthritis (RA) development. However, the function and mechanism of circRNA pituitary tumor-transforming 1 interacting protein (circ- PTTG1IP) in RA unknown. The expression circ-PTTG1IP synovial tissues patients fibroblast-like synoviocytes from (RA-FLSs) were detected by RT-qPCR. results uncovered that was overexpressed RA-FLSs, knockdown suppr...